(a) Through a given point, only one straight line can be drawn. Clearly, statement (a) is false because we can draw infinitely many straight lines through a given point.

Which of the following statement is false any two cr2 o7 is less soluble than k2 cr2 o7?

Explanation: Na2C2O7 is more soluble than K2Cr2O7 .

Which one of the following is false a work is a state function B temperature is a state function C change in the state is completely defined when the initial and final states are specified D work appears at the boundary of the system?

Answer: (1) first statement: It is a false statement because work is a path function. Those functions which do depend on the path from two points are known as path functions. Second statement: It is true because the temperature is a state function.

Which of the following statement is false A through a given point only one straight line can be drawn?

Option B is incorrect /false because states “Through a given point or one straight line can be drawn “because to draw a straight line we only need one point and to draw a line segment we need 2 points as shown in figures.

Which of the following has two endpoints?

A line segment has two endpoints. A line segment connects both endpoints.

Is it true that a line segment can be produced to any desired length?

A line segment can be produced to any desired length. Through two given points, it is possible to draw one and only one straight line.

Why few drops of acid are added to k2 cr2 o7 solution?

A small amount of potassium dichromate solution is acidified with dilute sulphuric acid. A few drops of butanal are added to it. Potassium dichromate in the presence of acid acts like an oxidising agent. It oxidises aldehydes to acid.

What is the minimum amount of water is needed to dissolve 3.0 mol potassium dichromate k2cr2o7?

7 liters of water is the theoretical amount needed to dissolve 3.0 moles of pure K2Cr2O7 at 20 °C. The solubility of K2Cr2O7 in water is 125 g/L at 20 °C.

Is heat a path or state function?

Heat and work are not state functions. Work can’t be a state function because it is proportional to the distance an object is moved, which depends on the path used to go from the initial to the final state. Thermodynamic properties that are not state functions are often described by lowercase letters (q and w).

Does work appears at the boundary of the system?

Logic & solution: * Work appears only as change in the state at the boundary of the system. It can be defined as any quantity of energy that flows across the boundary between the system and surroundings which can be used to change the height of a mass in the surroundings.

Which of the following is accurate for straight line definition?

It has no width, volume, thickness, length or depth. Yet when you have two points, if you connect every point between those two points, you have a straight line. Points on a line are collinear (col = “with,” or “together” and linear = “string,” or “line”). Only two points are needed to determine a line.

What is a line with two arrows called?

We can illustrate that by little arrows on both ends. We can name a line using two points on it. This is line EF or line (note the arrowheads). that by drawing an arrow at one end of the ray.

When two rays have a common endpoint they form a?

Angle. An angle is formed by two rays with a common endpoint. Each ray is called an arm of the angle.

Which line can be produced indefinitely?

terminated line
A terminated line can be produced indefinitely on both the sides. If two circles are equal, then their radii are equal.

Why few drops of acid are added to K2Cr2O7?

How do you acidify K2Cr2O7?

To make up the the acidified dichromate(VI) solution: dissolve 2 g of potassium dichromate(VI) in 80 cm3 of deionised or distilled water and slowly add 10 cm3 of concentrated sulfuric acid to the solution, with cooling.

What is the minimum amount of water needed to dissolve 3.0 mol of potassium dichromate justify with a calculation?

7 liters of water is the theoretical amount needed to dissolve 3.0 moles of pure K2Cr2O7 at 20 °C. The solubility of K2Cr2O7 in water is 125 g/L at 20 °C. (According to information from the Merck – Sigma company of chemical supplies). Molar mass K2Cr2O7 =294,185 g/mol.

Can 1750 ml of water dissolve 4.6 moles of cuso4?

Answer: No, you cannot dissolve 4.6 moles of copper sulfate, CuSO₄, in 1750mL of water.

How do you prove heat is a path function?

Heat transfer is a path function. The amount of heat transfer not only depends on end states but also depends on the path followed by it. Thus we can write aQ for heat transfer. Whenever there is temperature difference, there will be heat flow.

Which out of the following is not a state function?

Value of enthalpy, internal energy and entropy depend on state and not path followed, so they are state functions. Work is not state function because its value depends on path followed.

Which statement is a false?

A false statement is a statement that is not true. Although the word fallacy is sometimes used as a synonym for false statement, that is not how the word is used in philosophy, mathematics, logic and most formal contexts. A false statement need not be a lie.

Which of the following statement is false a fast reaction?

The rate of reaction is directly proportional to the rate constant and inversely proportional to half life so, if the reaction is faster then the rate constant will be large and the half life is short. The formula to calculate half life for the first order reaction is: t12=0.693k . Hence it is a false statement.

Which one of the following statements is false Mcq?

Discussion Forum

How many lines pass two distinct points?

one line
So, only one line can pass through two distinct points.

Can a terminated line be produced indefinitely?

A terminated line can be produced indefinitely on both sides. * A terminated line is that part of a line which has two fixed points i.e. terminated line has definite end points because of which we can measure the length of the terminated line.

What is a false written statement?

A person is guilty of making a punishable false written statement when. he knowingly makes a false statement, which he does not believe to be. true, in a written instrument bearing a legally authorized form notice. to the effect that false statements made therein are punishable.

Can a reaction order be 0?

Zero-order reactions are typically found when a material that is required for the reaction to proceed, such as a surface or a catalyst, is saturated by the reactants. A reaction is zero-order if concentration data is plotted versus time and the result is a straight line.

What is second order reaction in chemistry?

: a chemical reaction in which the rate of reaction is proportional to the concentration of each of two reacting molecules — compare order of a reaction.